X-rays Reveal Details of Plastic Solar Cell Production
January 13, 2016 | TECHNICAL UNIVERSITY OF MUNICH (TUM)Estimated reading time: 3 minutes
Plastic solar cells are light, easy to install, and readily produced using a printer. Nevertheless, the processes that take place on the molecular scale during the production of organic solar cells are not yet entirely clear. Researchers from the Technical University of Munich (TUM) have now managed to observe these processes in real time. Their findings, which are published in the specialist journal Advanced Energy Materials, could help to improve the efficiency of organic solar cells.
The solar modules that can be seen on the roofs of many houses mainly consist of the semiconductor silicon. They are heavy and consequently costly to secure on roofs. Moreover, they do not blend in very well with their surroundings.
Organic solar cells, which consist of organic molecules like plastic bags or cling film, are an alternative to these conventional solar cells. Organic solar cells are soluble and can therefore be produced using a printer. Since they are very thin and light weight the installation of this thin light converting device in a variety of different locations is feasible, furthermore, the color and shape of the solar cells can also be adjusted. One of the current disadvantages is, however: The efficiency of organic photovoltaics has not yet reached that of silicon solar cells.
Processes at the nano level
One of the key parameters for harvesting more energy from the flexible solar cells is the arrangement of the molecular components of the material. This is important for the energy conversion because, as in the case of the "classic" solar cell, free electrons must be produced. To do this, organic solar cells need two types of material, one that donates electrons and another one that accepts them. The interface between these materials must be as large as possible to convert light into electricity. Up to now, it was not known exactly how the molecules align with each other during the printing process and how the crystals they form grow during the drying process. Like the pigments in printer ink, the molecules are initially contained in a solution.
"In order to be able to control the arrangement of the components, we need to understand what happens at the molecular level during the drying process," explains Dr. Eva M. Herzig from the Munich School of Engineering (MSE) at TUM. To resolve such small structures inside a drying film with adequate time resolution presents an experimental challenge.
Page 1 of 2
Suggested Items
Indium Corporation, Industry Partners to Showcase Products “Live@APEX”
03/26/2024 | Indium CorporationIndium Corporation®, in cooperation with its industry partners, will feature its proven solder solutions live on the show floor throughout IPC APEX Expo from Apr. 9‒11 in Anaheim, Calif., U.S.
Dymax Will Exhibit Light-Cure Solutions for Today’s Electronics at IPC APEX 2024
03/26/2024 | DymaxDymax, a leading manufacturer of rapid and light-curing materials and equipment, will exhibit at the IPC APEX EXPO 2024 in Anaheim, CA, April 9-11.
Ventec to Launch New Bondply Dielectrics and Value-Added Services at IPC APEX EXPO 2024
03/26/2024 | Ventec International GroupVentec International Group is to reveal new products for advanced signal integrity and thermal performance, and introduce services, during IPC APEX EXPO 2024, April 9-11 on booth # 4309.
Electra Polymers Ltd Expands Manufacturing Capacity, Invests in New Facilities and Talent
03/26/2024 | Electra Polymers LtdElectra Polymers Ltd, a leading provider of coatings for the electronics industry, proudly announces a significant expansion of its manufacturing capacity for inkjet materials. The company is making substantial investments in new facilities, talent acquisition, and cutting-edge laboratory equipment to meet the increasing demand for high-performance functional inkjet materials in the market.
I-Connect007 Editor’s Choice: Five Must-Reads for the Week
03/22/2024 | Nolan Johnson, I-Connect007This week's news feed contains a bunch of big money items, as well as some interesting industrial and technology puzzles to be solved. There’s even some down-home people news from the Dallas SMTA conference held this week. Don’t overlook the latest issue of PCB007 Magazine, either. The topic is sustainability, which is becoming an ecosystem of its own.